# Garbage disposal leaking: where it leaks and what to do

Updated: 2026-10-24 · https://pros411.com/en/guides/plumbers/garbage-disposal-leaking

## Short answer

Unplug it first. Dry it and put a paper towel under it. Fill the sink with water and a few drops of food coloring so the drip shows. A leak at the top usually means a loose mounting ring or old putty at the sink flange. At the side, tighten the dishwasher hose clamp or the drain pipe bolts. A leak from the bottom means the inside seal failed: replace the disposal.

> Safety first: Unplug the disposal or switch off its breaker before you touch it, and keep your hands out of the drain opening.

## How to find and fix a leaking garbage disposal

![Cartoon garbage disposal leaking under the kitchen sink into a puddle](https://pros411.com/img/guias/garbage-disposal-leaking.webp)

1. **Drips under the disposal.** Water on the cabinet floor right below the disposal. Put a bowl under it and stop using the sink for now.
2. **Unplug it, dry it and find the drip.** Lay a paper towel under it. Fill the sink with a few drops of food coloring, let it drain and watch where the color shows up.
3. **Top leak: snug the mounting ring.** The ring that holds the disposal to the sink can work loose. Turn it until it locks tight. If it still drips, the putty needs redoing.
4. **Side leak: tighten the hose clamp.** The dishwasher hose and the drain pipe connect on the sides. Snug the hose clamp with a screwdriver, and the drain pipe bolts too.
5. **Run water again and check the towel.** Fill and drain the sink once more. A dry paper towel means it is fixed.

## Bottom leak: time for a new one

Water from the bottom, or from around the reset button, means the seal inside the disposal wore out. It cannot be fixed from outside. Leave it unplugged, keep a bowl under it and replace the unit. A plumber can swap it and check the sink flange at the same time.

## What not to do

- Do not seal a bottom leak with tape or silicone. The water keeps coming from inside.
- Do not keep running a leaking disposal: water and electricity do not mix.
- Do not overtighten the drain pipe bolts. The plastic flange cracks.

## When to call a plumber

- Water drips from the bottom of the disposal (the inside seal failed).
- The top still leaks after you snug the mounting ring (the sink flange needs new putty).
- The housing is cracked or rusted through.
- Water reaches the outlet or the wiring under the sink.

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## Frequently asked questions

### Why is my garbage disposal leaking from the bottom?

The seal inside the unit wore out, usually with age. It cannot be repaired from outside, so the disposal needs to be replaced.

### Why is my garbage disposal leaking from the top?

The mounting ring is loose, or the putty under the sink flange dried out. Snug the ring first; if it still leaks, the flange has to be resealed.

### Can a leaking garbage disposal be fixed?

Top and side leaks usually can: a loose ring, clamp or bolt. A bottom leak means a new disposal.

### Is it safe to use a leaking garbage disposal?

No. Keep it unplugged until it is fixed. Water dripping near the plug and the wiring is a shock risk.

### How do I find where my disposal is leaking?

Dry it, put a paper towel under it and fill the sink with water and a few drops of food coloring. The colored drip shows you the spot.